Case b



" '.IMPRQVEMENT; "NSLF--QLCSINeHATeHiwAYS.

specificati@ frnlig part Letters; I

n cityof''l\loi1 trea'l,`l inthe district offMdiitre-aland Province of Quebec, "Ganadafhafre' 'in`v l vented certain new anduseful lm1')rf o\'e'ments,f in Ho'istways; and' 'Il do 'h'erebyd'eclare that' the following i's a full', clear,pand egact'i'descifip-'A tion of the 'saine'.`

tWays the doors of 'which' are openedand closed Yby sliding upand down, an'djis'v'intended toen- .able them to be Vworked automaticallybyithe ascent and descentof'lth'e tra-velingcab'orplat-V form as' itpasses the several oors, in. any Warehouse, obviating any chancef'ofl'those ac -l cidents which are now so"frequen'nasthe doors on each story are kept clostr'dgexceptwhen the traveling platform is close to the level of the oor, and doing away with the objections to hoistways on the ground of communicating lire from one story to another, as, in this case, the hoistway is cut off from each loor through which it passes.

For fuller comprehension of my invention, reference must be had to the annexeddrawings, in which similar letters of reference indicate like parts, and where- Figure l is a plan veiw of hoistway and traveling platform. Fig. 2 is a sectional elevation, showing side of hoistway. Fig. 3 is a part sectional elevation, showing the action of the platform as it descends. v

A is the frame-work of the hoist, of any usual size and construction, and B the rising and falling door, provided, as shown in Figs. 1 and 2, with a ledge, B1. the upper surface of Which is beveled off. Through slots in thelower part of this door B pass, as shown at C, Figs. l and 2,V stops, hinged so as to offer no resistance to any descending body, but acted upon by the projections D, secured, preferably, to

the upper part of the traveling platform E, as it passes upward. F F are bars running diagonally from the stops G, and hinged to the door, and G G are the lines which are attached to the lower end of the door. and,passing over sheaves, have secured to their other ends weights H, ruiming in guides I, and made somewhatlighter than the door. These weights arent 69,626, datedfototefie,137e; Afnlgifientiii tief .fihi-March i9, i375, Bll l y I Heraus snowrti'nfrig'aformed' Be itv known that 'I` WILLAM Mure; 'of the'y v'will he hereinafterdescribed.' A{K iisa; s '1f rest, 'u'po'n wliichthe door'sf'st'an'd'iiihe raised. to their fnlVhe'ighti f' b" le"vers"'L,A pivo'ted, short/ ninfF and: extended vso asto Vpass'throughft Y 1I andv behind the 'weights 'shown 'at-.L2 lterminatingin a 'rounded e'iid or inf'a ibrkedjarm 'carrying a roller,lor 1aiiy' otherfsuitableidevice pfor reducingI fric-tin; irte-- arms L2 :are acted 4upon by inclin edpl anes 1M", as shown iii"dotted Elines, Fig.`2,`secured to' the sides'of th'etravelin'gv platibrmE, which, as trisesfor descends, ,gradually-push" forward thelofwer vendl'ffo'f the "leverfL' till, it"V is' brought intol'thfposition shown" bythe dotted line's"i'n'Fi'sc', i.-2,thi1s drawing back the rest K, and allowing the door to descend and close. N is a projection or projections set some little distance above the rest Kv, and pressing against the bars F as the door rises, for the purpose of disengaging the stops O from the projections D on the traveling platform. As shown at Fig. 2, springs are provided to these bars F to restore them to their position directly the pressure is removed. O O are springs secured to the lower sides of E, which, asthe platform descends, strike against the projections H1 of the Weights H, and, by drawing them down, raise the door to the height required. The part O1 of these springs which comes in contact with H is, as shown in Figs. 1 and 3, turned so as to correspond in slope with the under surface of the projection H1, so that, as the platform E ascends, it readily yields to the pressure and allows the platform to pass up freely and without impediment. Instead of springs hinged bars may be used, provided with springs to keep them pushed out to the proper extent, and turned to the same bevel as the under sides of H1, Where they come in contact with them, as already described. P is a projecting piece, beveled both above and below, and pressing against the spring O, as the cab passes upward,'so as to forceitinward and free it from the weight H at the proper time.

The operation of myinvention is as follows:

As..the.travelingplatform E` asceuds, the promjections D secured: to. the.; upper Y- par-toi?.l the `stops C, thus carryingthe door up with the platform, The door rises till the bars F come in contact with the projection N, which, gradually forcing `them outward, releases the :stops C from the projections QD, leaving the door supported under theledge Bl and held up by the rest K, and` allowing the platform to proceed upward. As.` soon as the actionof the inclined planes M presses the arm L2 ot' the lever L; forward, the rest K is withdrawn `from urderwthe ledge B1, the doorthendescending and closing, a bu'er of any suitable kind being provided to receive it. M are arranged to work in combination with the platform, one set on its upward, and the othereonj itsu downward, passage,and areso Ati Qed, astro allow itk to pass some little distance jtheplatformfbe not vstoppedat theexact level A)required,l the doorswill be retained at theirA elevatioitby the restK until the platform can i befadjnsted to thetrequired point. As the ['platform descends 'the springs O engagewith Q ;fthe` projectifonslHl oftheweights H, and, b v` These inclined planes itherabove or; below the level of the floor be-i fore their "action y takesplace, so. that even it' arelighter thanwthe door, allowing` ititorlescenddirec ily. they are!` disen eager-lv ii'ronifgthe platbrn1.fjf"The fiest Klis` withdrawn l"from underlthe door at the proper time by other inclined planes M, as just described. The beveled under surfaces of P. o'ering no resistanceco` the isprilngsf), allow the platform to pass freely as 'it rises."

1 do not.,claim.any.improvements on the traveling platform, orfon the means whereby fit is worked; norV i's my invention applicable to hatchways or to any kind of hoistdoors other than those `whichJslide upward ,ibut

What `Iclaim as myinventioil'is as follows: 1. In combination with theirising doors of' a hoistway, hinged stops C, acted upon by projections formedon the traveling platform in its upward movement, and yielding to the same as it descends, thestops,beingjdisengaged `from they platiormas itrises, bytheprojectiou N, formed on the h0istway`,jall substantially 'asVset-forthf l, ,.f

2,. The y .eom,bination",ef;` the rest Kandy? pivotel `levers L with,armsLEafoi-the pnrposeof retainingf in afraisedr position' "the dgoorsfsliding upward) of any hoistwayfand thefinclifned planes* M, securedto thewtrwveling platform E, to reverse` this action and allowtheidoorwto fall, substantially Asidescribed;4 t Montreal, 23dydayloffJ* i S. J. KERB.'

puarytAJDl 1875. 

